Butterflies are classified as LEPIDOPTERA, and there are tens of thousands of species in the world.

2. Since Cretaceous, butterflies have evolved and pollinated flowering plants. They are the third creature in the evolution of insects.

3. Butterflies are mostly between 15-20cm, and their bodies are divided into head, chest, abdomen, two pairs of wings and three feet.

There are a pair of hammer-shaped tentacles on the head, with thick ends and wide wings, which stand on the back when resting.

5. The butterfly antenna is rod-shaped, and each node at the end of the antenna is thick and rod-hammer-shaped, with flat scaly hairs on its body and wings.